Home / 649,928.95-896,599.72-420,560.37

Finding the Fourth Proportional to 649,928.95, 896,599.72 and 420,560.37

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Solution

The fourth proportional to 649,928.95, 896,599.72 and 420,560.37 is: 580,177.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,928.95 : 896,599.72 = 420,560.37 : x
  2. Step 2: Convert to fraction form
    649,928.95/896,599.72 = 420,560.37/x
  3. Step 3: Cross multiply
    649,928.95x = 896,599.72 × 420,560.37
  4. Step 4: Simplify right side
    649,928.95x = 377,074,309,985.10
  5. Step 5: Solve for x
    x = 377,074,309,985.10/649,928.95
  6. Step 6: Final answer
    x = 580,177.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.